workflow_core/
env.rs

1//!
2//! Access to environment variables when running natively or
3//! on top of Node.js (via `process.env`).
4//!
5
6use cfg_if::cfg_if;
7use std::env::VarError;
8
9pub fn var(_key: &str) -> Result<String, VarError> {
10    cfg_if! {
11        if #[cfg(target_arch = "wasm32")] {
12            if crate::runtime::is_node() {
13                match get_nodejs_env_var(_key)? {
14                    Some(v) => Ok(v),
15                    None => {
16                        Err(VarError::NotPresent)
17                    }
18                }
19            } else {
20                panic!("workflow_core::env::var() is not supported on this platform (must be native of nodejs)");
21            }
22        } else {
23            std::env::var(_key)
24        }
25    }
26}
27
28#[allow(dead_code)]
29fn get_nodejs_env_var(key: &str) -> Result<Option<String>, VarError> {
30    use js_sys::{Object, Reflect};
31    use wasm_bindgen::prelude::*;
32
33    let process = Reflect::get(&js_sys::global(), &"process".into())
34        .expect("Unable to get nodejs process global");
35    let env = Reflect::get(&process, &"env".into()).expect("Unable to get nodejs process.env");
36    let object = Object::from(env);
37    let value =
38        Reflect::get(&object, &JsValue::from_str(key)).map_err(|_err| VarError::NotPresent)?;
39    Ok(value.as_string())
40}
workflow_core/env.rs

workflow_core/
env.rs
